<!DOCTYPE html>
<style>
    :root {
        --my-background-color: #19db6e;
    }
</style>
<script src="include.js"></script>
<script>
    test(() => {
        const style = getComputedStyle(document.body);
        println(`PASS: ${style.getPropertyValue("--my-background-color")}`);
    });
</script>
